catholic

caucus

private meeting of members of a party to select officers or determine policy (cuộc họp kín)
(At the opening of Congress the members of the Democratic Party held a caucus to elect the majority leader of the House and the party whip.)

caulk

causal

implying a cause-and-effect relationship (thuộc nguyên nhân)
(The psychologist maintained there was a causal relationship between the nature of one's early childhood experiences and one's adult personality.)

celestial

celibate

abstaining from sexual intercourse; unmarried
Though the late Havelock Ellis wrote extensively about sexual customs and was considered an expert in such matters, recent studies maintain he was celibate throughout his life.(abstain: kiêng khem)